Conveying and distributing mechanism.



S. SHARE, Ja.

cowvivme Ma isrmsum MECHANISM.

APPLICATION FILED MAR.22| |915.

` Patented May 21,1918.

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AFPUCATGN FLE NEAR. 22, |915. Y 1,267, 341 Paltonfod May 2l, 1918.

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CONVEYING AND NSFHBTING MECHANISM.

APPucmou min maiz. 1915.`

1,267,341 1 Patented May 21,19i8.

gnomi loz SAMUEL siemens, Jn., or MILWA PAN-Y, or MILWAUKEE, W

UKEE, WISCONSIN, ASSIGNOB T0 CHAIN BELT COM- ISCONSIN, A CORPORATION 0FWISCONSIN.

CONVEYING AND DISTBIBUTING MECHANISM.

Specieation of Letters Patent.

Patented May 21, isis.

applicativa inea March 22, 1915. semi so. 16,133.

To all whom t may concern.'

Be it known that I, SAMUEL Snaren, Jr.,

a citizen of the United States, residing at Milwaukee, in the county ofMilwaukee and State of Wisconsin,

have invented certain new and useful Improvements in Conveying andDistributing Mechanism,

following is a specification.

of which the invention relates to conveying and distributing apparatusand it has been elaborated with especial reference to being used as 'thedelivery mechanism for the product of a concrete mixing machine.

tion, however, is capable of of applications and uses.

The inven a Wide variety It has especial adaptability to apparatus inwhich is employed a conveying receptacle arranged to traverse anoverhead support suoli as a swinging crane or boom, the receptacle beingprovided with bottom doors through which the material is discharged. Acabie or its equivalent is employed for moving the conveying receptacleback the said support, and this is employed as the means for operationof the doors of the and forth along traversing cable controlling thereceptacle, the

trolled by the operation of and the closing of the doors cept-.wle intocondition a charge is also controlled by of the said cable.

the said cable, to put the reto receive and retain the movements ln theaccompanying drawings I have illustrated one embodiment of the inventionin apparatus for receiving the product of a concrete mixing machine andfor delivering it to the place where it is to be used. I do not,however. Wish to be understood as limitm ing my invention by suchillustration to the particular combinations and arrangement of parts.and use, thereby' indicated. n such drawings Figure 1 is a sideelevation of apparatus embodying my invention;

Fi Q is a transverse sectional view taken on the line Hfll of Fig. l.

Fig. 3 is an elevation of the opposite shown in Fig. 1,

of the machine from that the boom being broken away. Fig. 4 is a centralvertical si de sectional view illustratin the parts that control themovements of t e doors of the conveyer bucket, in the positions theyoccupy when the bucket is about to commence its outward traverse fromthe loading position.

Fig. 5 is a transverse sectional view taken on the line V-V of Fig. 4.

Fig. 6 is a vertical sectional view taken on the .line V-V of Fig. 3.

Fig. 7 is a detail View illustrating the automatic throvvpff devices forarresting the traverse of the conveyer bucket as it reaches respectivelythe ends of its travel.

Fig. 8 is a central vertical sectional view illustrating the parts thatcontrol the movements of the doors of the conveyor bucket, in thepositions they occupy when the bucket is on its outward traverse.

Fie. 9 is a view similar to Fig. 8 except that it illustrates thepositions o the parts the moment the lock for the bucket doors is beingtripped.

In the drawings, 2 indicates a portion of a concrete mixing machine ofthe rotary drum type, and 3 framework located near the discharge endthereof. 4 designates a bracket supported by the framework. in which ismounted a vertical pivot 5 that carries at its lower end a casting 6 inwhich is supported. by a horizontal pivot 7, a crane or boom 8 thatconstitutes a track or Way along which is caused to travel the conveyingand distributing receptacle for the material deliv ered by the mixingdrum.

This boom may be of an suitable or desired construction, that ilustrated in the drawings being formed of channel barsytho anges of whichconstitute the. tracks for the Wheels 10 of a carriage 11 from which issuspended a conveying bucket or receptacle 1:2. The boom is preferablyvertically adjustable about its pivot 7, a cable i3 being employed forthe double purpose of effecting such adjustment and also supporting theboom in an extended osition. Since the means for adjusting t e boomabout its pivot 'i' form no part. of my resent invention they areneither descri d nor illus trated in this case. The carrie. 11preferably comprises a pair of side pieces 14 suitably united andcarrying the wheels 10 and links or bars 15 supporting the bucket.

Motion is imparted to the carriage to cause it to traverse the boom orcrane by means of a cable 17 which is referably in the form of anendless chain Ibelt or drive chain. This chain belt is supported upon adriving sprocket wheel 18 mounted so as to turn freely upon the shaftconstituting the pivot 7, and another sprocket wheel 18 suitably mountedat the outer end of the oom. If found desirable one or more intermediateSupporting idler sprocket wheels 19 may be employed for sustaining theupper strand of the chain belt and preventing it from sa gingundesirably. l

he bucket 12 is preferably of the bottom-discharge type, being providedfor thaturpose with a pair of hinged doors 91. hese I arrange to openoutwardly and to them are connected links or chains 2l) that in turn areunited with an eye bolt 21 supported in the lower end of a curved locklink 22, the upper end of which is pivoted to an arm 23 rigidly securedto an axle or cross shaft 24 mounted in the carriage 11. 25 indicates ahandle secured to the shaft 24 and serving as the means by which thedoors of the bucket may be opened and closed manually. The arrangementfor controlling the operation of the doors thus far described is oneWell known in the art, being described and claimed in U. S. Patent No.605,62() to Alfred M. Acklin, and constitutes a toggle lock for holdingthe doors closed, and that may be easily tripped or broken, allowing thedoors to open own weight and that of the load which they sustain. Itsometimes happens that obstructions are encountered preventing the doorsbeing tightly closed. It has therefore been found desirable to supportthe eye bolt 21 yieldingly, it being surrounded by a coiled spring 26that, yielding, prevents harm or breakage to the mechanism should astone or other article prevent the doors properly closing.

The chain belt cable 17 is employed to move the bucket and its carriageor trolley along the boom from the position, close to the mixer, Whereit receives its load, to the place of discharge, and also to open thedoors of the bucket for discharging its contents, and for closing thedoors to put the bucket in condition to receive its charge, so that asingle attendant standing uponv the operators platform of the machinecan readily and accurately control all the movements and manipulationsof the bucket.

27 represents a sprocket segment loosely supported upon the shaft 24with its teeth in engagement with the links of the chain belt 17. Thesprocket se ent carries a contact arm or piece 29 an a gear segment 28,these parts being preferably integral and the gear segment carried bythe hub of y their the sprocket segment and concentric therewith. 3()represents a chain guard or stirrup supported in the frame of thetrolley 11 and disposed directly over the sprocket segment 27 andoperating to hold the chain in engagement with the teeth of the latter.31 indicates a gear, preferably of segmental form, loosely mounted upona pivotal support 33 in the frame of the carriage or troley and in meshwith the gear segment 28. The gear 31 carries an arm 32 at the end ofwhich is loosely pivoted a finger or arm 34, one end of which, 35, isweighted, and the other formed into a contact device 36, adapted toengage with an offset part or projection 37 of the arm 23. 38 indicatesa stop carried by the frame of the carriage with which the contact piece29 of the sprocket segment 27 is adapted to engage and by which theextent to which such se ment may move in one direction is determined.The operation of the parts just described will now be set forth, itbeing assumed that the bucket is in its innermost position, that is,located adjacent to the 'mixing drum and below the delivery spout 39thereof, and the parts in the positions indicated in Fig. 1.

When the bucket has been illed and it is desired to move it outwardalong the boom to the place where its load is to be discharged, theoperator, through suitable driving mechanism, such as will be presentlydescribed, causes the lower strand or run of chain belt to move outward.This chain belt, as has been described, is in engagement with thesprocket segment 27, mounted in the bucket carriage or trolley, and thelatter, which is free to turn upon its pivotal support 24, has beenalready rotated in one direction as far'as permitted, since the contactparts 29, carried by the sprocket segment, and 38, upon the carriage,are in engagement. The outward movement of the lower run of the chainbelt 17 thus causes the outward traverse of the bucket and its carriageto the place of delivery, arriving at which place the movement of thechain belt is arrested. As represented in the drawings when the sprocketsegment occupies the position just described the arm 32 1s brought intosuch position that the push-ofi' finger 34 lies in engagement with theend of the arm 23, or with the offset or contact projection 37 thereof,where it is held by the wei ht 35. The bucket being at the place ofischarge and the arts still in the position indicated in full ines inFig. 1, the operator starts the cable or chain belt 17 in the reversedirection to that just described, with the result that the sprocketsegment is turned upon its shaft, the trolley and the bucket which itsupports yet remaining at rest at the place of discharge. This movementof the the bucket as it is linger 34, movin sprocket, segmentcommunicates motion to, the ear segments 28 and 31, the arm 32 whic thelatter carries, and the push-o inger or arm 34; and as the latter 1s inengagement with the upper end of the arm 23, to which the lock link 22for the doors of the bucket is connected, the movement of the parts justdescribed operates to rotate the said arm suiciently far to carry itsouter end over or across the axial line of the shaft 24, thus breakingthe toggle lock that holds the doors of the bucket securely closed andpermitting them to 'quickly open under the weight of the contents of thebucket, which is thereu on discharged, the parts then assumin t eposition indicated in dotted lines in ig. 1. As soon as the cable hasmoved far enough to effect the results just stated, its motion is againarrested. As the arm 23 moves from the position indicated in full linesin Fig. l to that shown in dotted lines, the projection 37 thereof comesinto engagement with one of th spokes or radial arms 40 of the sprocketsegment, carrying it to its extreme limt of movenient in one direction,with* the contact parts 29 and 38 in engagement, where, beingarrested,-the segment operates as a support for holding the doors fromfurther movement outwar The movement of the gear segment just described,under the iniuence of the `wei ht of the contents of ei'fig discharged,will cause a slight traverse of the bucket along the boom, but this isso small in extent as to be negli ible. The charge of the ,bucket beingde lvered, the bucket may now be restored to charging position, and thisis effected by the operator causing the chain belt or cable 17 to bemoved'in a direction to draw the trolley-and its bucket toward themixing machine. The first movement of the cable or chain eelt causes arotation of the sprocket segment, this taking place beforeY t e trolleybegins its inward traverse, moving the parts from the position indicatedin dotted lines in Fig. 1 to the ositions indicated in Fig. 4. As thesprocliset segment is rotated it operates to close the doors of thebucket, bringing them to toggle-locked position, by reason of theengagement between the projection 37 and ,the spoke 40 of the sprocketsegment. When the parts are in the position indicated in Fig. 4 thepush-ofi` finger 34 assumes the osition there indicatedY by reason ofthe act that the weighted end 35 thereof rests upon the hub of the gear3l. As the doors are being closed, and the parts are moving from theposition shown in dotted lines in Fig. to the position indicated in Fig.4, the projection 37 passes theiend 36 of the push-olf outside thelatter, that is, in an arc outside said part 36, which is held inward,or toward the centerfabout which the projection moves by the engment ofthe weighted end of' the p o lever with the hub of the' gear 31 justrefered to. Continued rotation of the sprocket segment is arrested byreason of the engagement of vthe look link 22 with the cross shaft 24,after which further movement of the chain belt operates to cause atraverse of the carriage along the track toward the mixing machine. Asthe sprocket segment is moving, in a clockwise direction, motion iscommunicated to the gear segment 28 and its arm 32 in acontra-clockwise" direction. As the push-0E gear and finger rotate abouta center to one side of the shaft 24, and as the latter is looselypivoted, it

passes below theupper connected end of the Y ook link 22, allowing it tocome into proper or locked position without material interference. Justbefore thetrolley reaches the inner end of the boom the operator maystop the movement of the cable, rmitt' the trolley and its bucket tofinish their inner run under the inuence of inertia or momentum. Thisresults in causing a turni of the sprocket segment and'of the push-odevices to the positions indicated in full lines in Fig. l, that is,with the push-oli' finger in engagement with the projection 37 at theupper end of the arm 23, and'agaiu ready for the outward traverse of thebucket, as has been described, whenever it may have received its charge.I will now describe the means shown in the drawings, and which I referto use, for ,driving the cable or chain t 17.-

0n the main counter-driving shaft 41 of the concrete mixing machine issecured a sprocket wheel 42 from which power is trans xmitted by meansof a chain 43 to a sprocket inion 44 on a horizontal shaft 45. Thisshaft 1s supported in bearings carried by the boom pivot bracket 4. Adou le cone casting 46 constituting the driving portion of a doublefriction clutch is secured to the shaft 45 and rotates therewith.Supported loosely upon the shaft 45 are the two bevel gears 4 to whichare respectively secured cone sections that coperate with the movableclutch casing 46. The bevel gears mesh wi a bevel pinion 48 upon avertically disposed shaft 49 that Y.passes axially through 'the verticalpivot 5 vof the boom and carries at its lower and a bevel pinion 50.This latter meshes with a bevel gear 51, to the huh of which is securedthe sprocket wheel 18 that en with and drives the chain belt cable 17. 2represents the hand lever by which the operator controls the movementsof the traversing cable, it being connected throu h a suitable train ofdevices with the mov :soV

Velement 46 of the clutch. When the handle t is moved in one directionlthe cable is driven in a direction to cause the bucket to be traversedoutward; when moved in the other direction, to be traversed inward; andwhen it occupies a mid-position the clutch elements are out ofengagement .and the traversng cable is at rest.

By the mechanism described it is entirely feasible for the operator tocontrol all of the movements of the bucket,-its traverse backward andforward, its discharge, and its closing or restoring to chargingcondition-, throii h the proper manipulation of the hand ever 52. It is,however, often desirable to provide automatic means for limiting thetraverse of the bucket in each direction, stopping it when it reachesthe place of discharge, and a ain as it comes to position to receive itsloa and I will now describe the mechanism which I have devised for thuslimiting the movements of the trolley and bucket. b

54 desi ates a bevel pinion e d y the bevel t(iivllieels 47, andpreferablinged diametrically opposite the bevel pinion 48. It is securedto a vertical shaft 55 on which is mounted a spur pinion 56, the latterbeing preferably integral with the bevel pinion 54. This spur pinionmeshes with a spur gear 57, the hub of which turns freely in astationary bearing 58 provided therefor. The hub of the spur gear 57 iselon ated and formed into a nut 59 with whic engages a screw-threadedshaft 60, that is caused, by the turning of the s ur wheel and nut to bemoved longitudina ly, either u wardly or downwardly, according to theirection in which these parts are rotated. One end of the shaft 60,preferably the lower end, is pivotally connected with a shifting lever6l that is supported between its ends upon a vot 62. The outer or freeend of this shi ting lever is forked so as to form the arms 63 in whichlatter are mounted relatively long adjusting screws 64. An arm issecured to the hand lever 52 by which the drivin of the cable 17 iscontrolled, or to the sha t on which the said hand lever is mounted, andits free end lies between the ends of the screws 64.

From the fore oing description, taken in connection with tie drawings,it will be Seen that the nut 59 is rotated whenever the traversing cableis driven, this nut operating the shifting lever 61. The screws 64carried by the latter are so adjusted that one of them comes into enagement with the arm 65 and operates the c utch to throw it into its midor neutral position, thus disconnecting the cable from the source ofower, whenever the trolley approaches the inner end of the boom, thatis, just as, or before, it reaches the charging position. The otheradjustable :1er-.fw comes into engagement with the arm 65 and through itoperates the clutch to engage the cable from its source of power whenthe bucket and trolley reach the position for discharge. By adjustingthe screws 64 the respective limits of the traverse of the bucket andtrolley may be accurately determined.

I employ the term receptacle in the following claims in a broad sense,intendin thereby to include both the receptacle itsel and its support,which, in the particular instance illustrated, is the trolley orcarriage and its supporting wheels, it being quite immaterial for manyuses of the invention whether the receptacle be supported from above orbelow, and whether its supporting wheels be mounted in a separate trolleor carriage, or connected with the body o the receptacle itself.

What I claim is 1. The combination of a track, a traversing cablesupported so as to move parallel with and adjacent to the track, adischarging receptacle supported entirely by the track and arranged tobe traversed thereon by the cable-in one direction when loaded andmoving to the place of discharge, or in the opposite direction whenempty and moving to the place of loading-the receptacle being movable onthe track to a limited extent relative to the cable, means operated bythe relative movement of the receptacle and cable for causing thereceptacle to discharge, and means carried by the receptacle andoperated by the cable for positively restoring -the receptacle toload-containing condition after discharge, by moving the cable in thedirection to return the receptacle to the place of loading.

2. The combination with a track, a traversin cable supported so as tomove parallel with and adjacent to the track, a discharging receptaclesup orted entirely by the track and arrange to be traversed along thetrack by the said cable and movable along the track relative to thecable, and means for holding the receptacle in load-contaim' condition,of means operated by the ca le when it is moved in one direction, andarranged first to trip the receptacle and permit it to discharge, andthen by a further movement in the same direction, to again restore thereceptacle to condition to receive and hold another charge.

3. The combination with a track, a dischar 'ng conveyor receptaclesupported there y, a cable independent of the receptacle and free tomove to a limited extent relative thereto for causing its traverse, andmeans for locking the receptacle in loadcontaining condition, of toothedgearing intermeshing with the cable and having means to be operatedthereby when it is moving independently of the receptacle, to positivelymeneer operate the locking' means that liol the bucket, to consceJdischarge thereof.

4'. The combination with e. track, a, discharging conveyor receptaclesupported thereby, a cable independent of the receptacle and free tomove to a limited extent relative'thereto for causing its traverse, andmeans for locking the receptacle in loadcontaining condition, of toothedgearing inter-meshing with the cable and having means to be operatedtiereb when it is moving in one direction and independently of thereceptacle, to positively operate the locking ineens that' hel'thebucket to canse a discharge thereof, and operated also by a furthermovement in the seme direction to restore the rece nele toV condition toreceive and hold enot er charge.

5. I3-*he combination with e track and o colrveyingV rece fascio'supported entirely thereb'of e ce leor causing' theV traverse of thereceptacle amdfree to move to a limitedV extent reieltve'thereto, thecable being of drive chain construction, and toothedV connections in'engagement with the said chain cable end positively operated thereby,sind liovinglrmenns VtoV cause tlie receptacle te discharged.

6; The combination with e track and e cemneying"Y receiitccle supportedentirely thereby, 'ein cbleVv for causing the traverse ofthe-'receptacle:indirecto move to e limited extent relative thereto, the cable being ofdrive chain construction, and toothed geni-ing inengagemcnt with thechain cable endopereted tliereby, having means to posij tivey restorethe `receptacle to normali condiioir totrefceive a. loadv after it hasbeen die cherged 7: VrEliefcombinationYwith a track, a conveyinreceptecle supported by the track, provi ed with doors for closin it,and means connected with the doors y which their movements may VbeVcontrolled, of e cable for cousin the traverse ofthe receptacle, Ineenshavin intermeshing connection with the cable en' supported by thereceptacle arranged to operette the ineens that control theV movements?of the doors, and stops; corriedy'tiie receptacle for limiting theextent torvihich the said cable-operated means maybe moved independentlyof the receptacle.

8; Theseomenetien with a track, e conf veyiiig" receptacle supportedthereby provided vvitlidgorsf'fijcclosing it and petting it inco1iflitioiitoretirinn charge and toggie lockingmeans connected with thedoors by whiclithey may be closed and heldY in' closed position, of: eiceble for causing the traverseY of the receptacle along the track,andrneens supported' by the receptacle, having intermesiiingconnectionwiththe cable, and free to move to a limited extent relativeto the receptacle and arranged to not upon the seid toggle locking meansand restore the doors 1o closed position after they have been openedWhcirthe cable is moved in one direction.

9. The combination with a. Track, s. con vering receptacle supportedthereby provided with closing doors, and toggle locking ineens forholding the doors closed, of :a cable for causing the traverse of thereceptacle along the track, n, gear element having intermeshingconnection with the cable, snpportcd by the receptacle and movable reletivethcretc, stops Vtor limiting the extent to .vlii'oh the seid gearelement may be moved, andmenns opcretedib the gear element for movingthe toggle loc ing menneY to permit the doors lo open when the cable isYmoved in one directions further movement of the robleV inthe Soniedirection beingV arranged through interconnection between tire seidgein' element and the toggle locking means, to restore the letter tolocking position.

10. The combination with e track and e demping conve ing receptaclesupported thereby, of s 'crible for causing traverse of the receptacleniong the track, and ineens supported by the receptacle havingintermcsbing connection With and operated by tbc cable, and comprising epart arranged to move in one direction to :1ct on the receptacle to demit, and another part moving in the opposite directionV to restore thereceptacle to s position to receive oV charge, the said partsopeinti'ngV in' secccssion;

11. The combination with e track, a conveying receptacle supportedthereby, and providcdivith doorsfor controlling the discharge of thereceptacle, and toggle locking means for theV doors.V of' e cable forceusing the traverse of the receptacle, n gen1' element supported by thereceptacle, having inten meshing connection with the cable Eind free tomove to e limited extent relative tothe re ceptncle, such element havingmeans for closing seid doors when being moved relaitive to tbereceptacle by the reverse movement of the cable, and means also operatedfrom the cable for'tripping the toggle lock to pernit the doors to open.

l2; The combination with a treck, e conveying receptacle supportedYthereby having doors Yforcontrollin its discharge, and tog- Ule'loekiiigmeans or the doors, of e cable lor causing the traverse of thereceptacle, a. geer'element snpported'by the receptacle and free to moveto e limited extent relative thereto end having intermeshing connectionwithV the cable, end menne ogereted'by the solidi gear element forcausing s. tripping of the'toggle lock to permit the doors to open, theseid gear element end tripping means being bioogiiti into operation upone reverse movement of the cable, the tripping means operating first totrip the toggle lock, and the gear element operating thereafter to closethe doors.

13. The combination with a track, a conveying receptacle supportedthereby provided with doors in its lower part for controlling itsdischarge, and a toggle lock connected with the doors and pivotallysupported by the receptacle above the doors, of a cable for causingtraverse of the receptacle along the track, a gear carried by thereceptacle having` intermeshing connection with the cable and looselysupported upon the saine axis as that about which the said toggle lockturns, stops for limiting the movements of the said gear element wherebywhen it arrives at either limit of its movement relative to thereceptacle motion may be communicated to the latter through it from thecable, and an arm in gear With and operated by the said ,gear elementarranged to push over the toggle lock and allow the doors to open uponthe motion of the cable being reversed.

l-t. The combination with a track, and a dumping conveying receptaclesupported thereby` of means for restoring the receptacle to condition toreceive a charge and maintaining it in such condition, tripping devicesacting on the last mentioned means to permit the charge in thereceptacle to be dumped, a cable of drive chain construction for causingthe traverse of the receptacle along the track. a gear supported by thereceptacle in mesh with the said chain cable, the gear being supportedso as to be free to move to a limited extent relative to the receptacleand the means to restore and maintain the receptacle in condition toreceive a charge, suoli means and the gear being arranged to come intoengagement after the latter has been tripped and the receptacledischarged, whereby on the reverse movement of the chain cable the gearacts on said means and restores the receptacle to condition to receive acharge.

15. The combination ot an elevated track, a trolley arranged to traversethe track, a convey ng receptacle provided With hinged doors suspendedfrom the trolley, a cable of drive chain construction for causing thetraverse of the trolley, toggle locking means connected with the doorsfor holding them in closed position, and gearing supported in thetrolley and free to turn to a limited eX- tent thereimmeshing vvith anddriven by vthe chain cable, the said cable-driven gearing being arrangedto trip the toggle locking means for the doors to permit the receptacleto be discharged upon being moved relative to to the receptacle andhaving means operating to positively restore such toggle locking meansand the doors to their respective locking and closed positions upon thecable being moved in a direction to return the receptacle to chargingposition.

lo. The combination of an elevated track, a trolley arranged to traversethe track, a dumping conveying receptacle suspended `troni the trolley,a cable of drive chain construction tor causing the traverso of thetrolley and receptacle, gearing supported in the trolley and free toturn to a limited extent ther, meshing with and driven by the chaincable, a guard carried by the trolley for maintaining the cable indriving engagement with the said gearing, and means actuated by the saidgearing as it is moved by by the cable arranged both to trip thereceptacle to permit it to dump its charge, and thereafter rest-ore itto condition to receive another charge.

17. The combination with an overhead track, a trolley arranged totraverse the track, a conveying receptacle provided With bottom., hingeddoors suspended from the trolley, and toggle locking means pivotallysupported in the trolley frame and connected With the doors for holdingthem closed, of a cable of drive chain construction for causing thetraverse of the trolley and receptacle, a gear segment pivot-allysupported iu the trolley t ame on the same axis as the aforesaid togglelocking means, and free to rotate to a limited extent relative to thetrolley and the toggle locking means, an arm pivotally supported in thetrolley frame, gearing between the said arm and the cabledriven gear`and a push-oli finger carried h y the said arm and adapted to engagewith the toggle locking mechanism, the said parts beingl arranged asdescribed whereby on a reverse movement of the cable the arm carryingthe push-olf linger is caused to act on the toggle locking devices andmove them to release the doors, permitting the discharge of the contentsof the receptacle, and tl'iereatter, on further movement of the cable,causes the cable-driven gear to restore the toggle locking devices andthe doors to closed and locked positions.

18. The combination with a track, a conveying receptacle supportedthereby, a cable t'or causing the traverse of the receptacle, gearingfor driving the cable, and a reversing clutch device through Which poweris transmitted for operating the cable-driving gear, of a nut and screwin engagement therewith` gearing between thc cable-driving gear and thenut and screw for causing the rotation and traverse of one of thelatter, a lever operated by the last referred to traversing memberprovided with a bifurcated end, adjustable contact pieces supported inthe bifurcated ends of the lever, and an arm through which the clutch isshifted located between the said adjust-able Contact pieces,

the said parts being arranged to causo the clutch to be shifted toneutral position :1S the receptacle reaches each limit of ils traverso.

19. In a. machine for delivering mixofl concrete, the combination of aswinging looom, a braokot in which the boom is snpporfed by verticalpivot, a conveying rooeptacle supported upon the boom, a crible for(3a-using the traverse of the roccptdclo along the boom, gearing fordriving the cuble including power transmitting parts ooncontric with theSuid vertical pivot of the boom, :i reversing clutch through which poweris transmitted for operating the said cable-driving gearing,clutch-shifting mmm adapted to be manually controlled, a lever for aisooperating the clutch-shifting moans, and means friven from the saidconcentri- Caoliy-disposod cable-driving gearing arrunged to operate thesaid lever anni through it more die clutch-shifting menus to neutralposition whenever the conveyor roceptaclo arrives al; either limit. ofits traverse.

SAMUEL SHAFER, JR.

Titrwsses:

H. Gr. FAWGETT, GEO. B. WELSER, Jr.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents, Washington, D. G.

